Fossil SCM
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## -*- tcl -*- |
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# # ## ### ##### ######## ############# ##################### |
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## Copyright (c) 2008 Mark Janssen. |
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# |
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# This software is licensed as described in the file LICENSE, which |
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# you should have received as part of this distribution. |
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# |
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# This software consists of voluntary contributions made by many |
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# individuals. For exact contribution history, see the revision |
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# history and logs, available at http://fossil-scm.hwaci.com/fossil |
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# # ## ### ##### ######## ############# ##################### |
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## Commands for creating and managing fossil blobs. |
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# # ## ### ##### ######## ############# ##################### |
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## Requirements |
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package require Tcl 8.5 ; # Required runtime. |
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package require sqlite3 ; # Fossil database access |
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package require snit ; # OO system. |
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package require zlib |
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package provide vc::fossil::blob 1.0 |
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# # ## ### ##### ######## ############# ##################### |
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## |
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namespace eval ::vc::fossil { |
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namespace export blob |
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snit::type blob { |
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option -data "" |
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constructor {args} { |
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$self configurelist $args |
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} |
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method compress {} { |
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set data [$self cget -data] |
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set n [string length $data] |
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set data [zlib compress $data 9] |
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set header [binary format I $n] |
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return $header$data |
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} |
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method decompress {} { |
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set data [$self cget -data] |
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binary scan $data I length |
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return [zlib decompress [string range $data 4 end] $length ] |
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} |
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} |
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} |
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